Volcanoes
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
Centers for Disease Control and Prevention (CDC):
Volcanoes
Volcano Safety Information Fact Sheet
FEMA – Federal Emergency Management Agency:
Volcanoes Fact Sheet for Kids
Volcanoes Fact Sheet for Kids
Emergency Survival Program:
Volcanoes
Also available in Spanish.